Abstract: In order to study the influence of natural wind on air source heat pump, the air source heat pump unit was as the research object and the natural wind of pulse type was selected. Through experimental testing the actual operation data of the unit in refrigeration and heating modes, the law of the influence of natural wind on the operation of the unit was summarized and analyzed. The test results showed that: the operating parameters of air source heat pump unit fluctuated periodically due to the influence of natural wind. And in the heating mode, the suction temperature of unit was influenced mainly, which of the fluctuation amplitude can reach more than 4℃. In the cooling mode, the ambient temperature and condensing temperature were influenced mainly, the fluctuation amplitude of ambient temperature can reach more than 6℃ and the condensing temperature fluctuated within 2~4℃. Through detecting the ambient temperature and suction temperature in real time and judging of their fluctuation characteristics, it can effectively avoid the interference of natural wind on operating air source heat pump unit. The study provided a reference basis for the windproof reliability design of the air source heat pump unit.

Key words: Natural wind, Air source heat pump, Windproof reliability design